Some parents demand that their children friend them on Facebook and other parents don’t. A developmental psychologist wondered if such parental supervision had any impact on behavior. She obtained a sample of first-year college students and classified them as having parents who were, or were not, Facebook friends. From each student she also learned the number of days, during the first month of college, that he or she had consumed any alcohol.

Select the appropriate statistical test from

(a) Single-sample z test;

(b) Single-sample t test;

(c) Independent-samples t test;

(d) Paired-samples t test;

(e) Between-subjects, one-way ANOVA; or

(f) None of the above.